faiechild



(No Model.)

PfM. PAIRGHILD.

BENCH DOG.

" ;Pa;tented Nov. 1886;

@1513 a 61mm 2136 N, PETERS, Pmmumn n hen wnmm ta D. c.

"ilivrrsn STATES PATENT Grinch.

FRANK M. FAIROH ILD, OF WEST DERBY, VERMONT.

BENCH-DOG.

SPECIFICATION forming part of Letters Patent No. 351,755, dated November2, 1886.

Application filed June 11, 1885.

.To all whom it may concern..-

Be it known that I, FRANK M. FAIROHILD, a citizen of the United States,residing at Vest Derby, in the countyof Orleans and State of Vermont,have invented a new and nsefullmprovement in Bench -Dogs, of which thefol-' lowing is a specification.

My invention relates to improvements in; bench-dogs; and it consists ofthe peculiar combination and novel construction and arrangement of thevarious parts for service, substantially as hereinafter fully set forth,and particularly pointed out in the claims.

The object of my invention is to provide novel means for securely andrigidly holding a board or plank in its proper position and againstmovement on a joiners or workmansbench while the board is being operatedupon in various ways; to provide means which can .be easily and readilyapplied to a bench of any width and construction; and, finally, toprovide a device which can be adjusted to engage with the worksimultaneously with its application to the bench.

In the accompanying drawings,which illustrate a bench-dog embodying myinvention, Figure 1 is a perspective view. Fig. 2 is a longitudinalsectional view through the device. Fig. 3 is a detached perspective viewof the holding-arms, and Fig. 4 is a view of the device applied oradjusted for useupon a bench, a portion only of the latter being shown.

Referring to the drawings, in which like letters of reference denotecorresponding parts in all the figures, A designates the lever, and Band O the holding-arms that are carried and actuated by the lever, of abench-dog embodying or constituting my invention.

One end of the lever A is slotted longitudinally, as at a, for aconsiderable distance, and in this slot works or slides a pin or screw,1), that is connected with or secured in the arm B of the device.

The arm B is provided at one end with the hook-shaped claw b, which isslotted or bifurcated, as shown, and this claw is formed in one piecewith the holding-arm, and is adapted to take or fit over the upper edgeof the bench and be forced into the latter by the action of the lever,as will be presently described.

The arm 0 comprises the two end sections, 0, which are arranged out ofline with each Serial No. 204,?59. (No model.)

other and connected by an integral intermediate portion, 0, which formsthe shoulders 0, one of the said shoulders having the curved andrecessed edge, as shown. One end of the arm 0 is pivoted to and carriedby the lever by means of a pin, screw, or other like means, which passesthrough the slots d and d of the lever A and arm 0, respectively, andthe opposite end of the said arm 0 is provided with a hook-shaped claw,e, which is formed integral therewith and is similar in form' to theclaw of the'arm B, as shown. The claw O is further provided on one ofits edges with a projecting pin or detent, F, that is rigidly securedthereto by screws, or formed integral therewith,which is adapted to beforced into the end of the board or other work and hold itrigidly inplace while it is being operated upon.

G designates a stop pin or screw, which is affixed 0r screwed to thelever A near one end, and it is arranged in the path of the recessedshoulder c of the swinging arm 0, so that the movement of arm G islimited in one direction by the said shoulder coming in contacttherewith, the pin entering the recess of the shoulder. i a

The operation of my invention is as follows: To adjust the dog upon abench for use, the claws of the holding-arms are fitted over the edgesof the bench and the arms are moved on their pivots intermediate of thelever A and the arms. The arms are adjusted longitudinally of the lever,in the slots thereof, if necessary, to adapt them to fit a bench, andthe arms are arranged out of line with and to one side of the lever.After the board has been placed on the bench the lever is moved towardthe arms to force the claws of the latter into firm engagement with thebench and bring the stop-pin G, carried thereby, near its lower free endinto the recess of the shoulder e of the arm 0. The lever A is graspedby the hand at its lower free end and forced toward the arm 0, at oneend thereof, and the lever moves on ate the latter. The movement of thelever in one direction is limited by the stop-pin G coming in contactwith the recessed shoulder of the arm 0, and the detent of the said armis forced into the end of the plank to hold the latter in place andagainst accidental move the pivots of thesaid arms B and O to actumentor displacement.

The reverse or retrograde movementof the leveri'eleases the holding-armsfrom the bench and the detent from the work, which can then be removed.

It will be seen that the claws of the holding-arms enter the bench andprevent movement of the arms and the displacement thereof, and the partsare very simple and strong in their construction, as well as durable,and cheap and inexpensive of manufacture.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a bench-dog, the combination of a lever, an arm, B, connected toone end of the lever, and having a claw at one end arranged to engagethe end of the table, an arm,O, connected to the lever intermediate ofits ends, and also provided with a claw to engage the table, and adetent, F, affixed to the arm 0 near its free end and projecting beyondone side of the same, substantially as described,for the purpose setforth.

2. In a bench-dog, the combination of a lever, an arm, B, connected toone end of the lever, and having a claw arranged to engage the end ofthe table, an arm, 0, also connected to the lever near its middle, andhaving a claw at its free end to engage the table, and a recessedshoulder near the middle, 2. stop affixed to the lever, arranged in thepath of the shoulder on the arm 0, and a detent affixed to the latterarm, substantially as described, for the purpose set forth.

3. In a bench-dog, the combination of a lever having a longitudinalslot, a, at one end, and a similar shorterslot, d, near its middle, thearms having the claws to engage the ends of the table, the pins passingthrough the slots of the lever and secured in the arms to connect thesame to the lever, and a detent, F, projecting beyond one edge of oneofthe arms, substantially. as described, for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

FRANK M. FAIROHILD.

\Vitnesses:

H. S. Roor, J OHN A. LORIMER.

